Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Hello Arturito_coco
Hi, I'm Karl and will be happy to help you today.
First, you cannot mix an MSI version of Office with any click-to-run options. Everything has to be the same installer type and there are no work-arounds that would allow both types to exist on the same machine.
That also brings up the question" Where did you purchase this copy of Office Pro Plus since Pro Plus is only available as part of a corporate Volume License agreement. If you obtained this from your company then you would need to contact your company's IT department.
Assuming that this was purchase online, then you have no options. Many online resellers sell volume license versions. The product key may work the first time you install it and will remain active on the machine. However, if you try to re-install it, you may find that the product key does not work anymore once Microsoft becomes aware of it,
A major red-flag that this is not a legitimate version is if the price paid for it was "too good to be true"